I have booster chairs as well, but I don't have a big table, so I need to start the 12 month olds in a high chair for a few months until they learn not to throw the plates across the room. LOL I also like to have a high chair as I can not see my daycare space from my kitchen, so if I have new ones and little ones that I don't trust yet, I like to have them in the high chair in the kitchen with me.
My big high chairs are such a pain to move between rooms and I hate storing them, they're so big! And super hard to clean.
Thanks for the suggestions. I know where I'm going this weekend.